<template>
    <div>
        <!--面包屑导航区域-->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!--卡片视图区域-->
        <el-card>
            <!--搜索与添加区域-->
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" @clear="getUserList" clearable>
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>                    
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
                </el-col>
            </el-row>

            <!--用户列表区域-->
            <el-table :data="userlist" border stripe>
                <el-table-column type="index"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态">
                    <template slot-scope="scope">
                        <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180px">
                    <template slot-scope="scope">
                        <!--修改按钮-->
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                        <!--删除按钮-->
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                        <!--分配角色按钮-->
                        <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>

            <!--分页区域-->
            <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">

            </el-pagination>
        </el-card>

        <!--添加用戶的对话框-->
        <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%"
        @close="addDialogClosed">
            <!--内容主体区域-->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!--底部区域-->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>

        <!--修改用户的对话框-->
        <el-dialog
        title="修改用户"
        :visible.sync="editDialogVisible"
        width="50%"
        @click="editDialogClosed">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email" ></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="editForm.mobile" ></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    data() {
        //验证邮箱的规则
        var checkEmail = (rule, value, cb) => {
            //验证邮箱的正则表达式
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-z0-9_-])+(\.[a-zA-z0-9_-])+/

            if(regEmail.test(value)){
                //合法的邮箱
                return cb()
            }

            cb(new Error('请输入合法的邮箱'))
        }

        //验证手机号的规则
        var checkMobile = (rule, value, cb) => {
        // 验证手机号的正则表达式
        const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

        if (regMobile.test(value)) {
            return cb()
        }

        cb(new Error('请输入合法的手机号'))
        }

        return {
            //获取用户列表的参数对象
            queryInfo: {
                query: '',
                //当前的页数
                pagenum: 1,
                //当前每页显示多少条数据
                pagesize: 2
            },
            userlist: [],
            total: 0,
            //控制添加用户对话框的显示与隐藏
            addDialogVisible: false,
            //添加用户的表单数据
            addForm: {
                username: '',
                password: '',
                email: '',
                mobile: '',
            },
            //添加表单的验证规则对象
            addFormRules: {
                username: [
                    {required: true, message: '请输入用户名', trigger: 'blur'},
                    {min: 3, max: 10, message: '用户名的长度在3~10个字符之间', trigger: 'blur'}
                ],
                password: [
                    {required: true, message: '请输入密码', trigger: 'blur'},
                    {min: 6, max: 15, message: '密码的长度在6~15个字符之间', trigger: 'blur'}
                ],
                email: [
                    {required: true, message: '请输入邮箱', trigger: 'blur'},
                    {validator: checkEmail, trigger: 'blur'}
                ],
                mobile: [
                    {required: true, message: '请输入手机号', trigger: 'blur'},
                    {validator: checkMobile, trigger: 'blur'}
                ],
            },
            //控制修改用户对话框的显示与隐藏
            editDialogVisible: false,
            //查询到的用户信息对象
            editForm: {},
            //修改表单的验证规则对象
            editFormRules: {
                email: [
                    {required: true, message: '请输入用户邮箱', trigger: 'blur'},
                    {validator: checkEmail, trigger: 'blur'}
                ],
                mobile: [
                    {required: true, message: '请输入手机号', trigger: 'blur'},
                    {validator: checkMobile, trigger: 'blur' }
                ]
            }
        }
    },
    created() {
        this.getUserList()
    },
    methods: {
        async getUserList() {
            const { data: res } = await this.$http.get('users',{ params: this.queryInfo })
            if(res.meta.status !== 200) { 
                return this.$message.error('获取用户列表失败！')
            }
            this.userlist = res.data.users
            this.total = res.data.total
        },
        //监听 pagesize 改变的事件
        handleSizeChange(newSize) {
            //console.log(newSize)
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        //监听页码值改变的事件
        handleCurrentChange(newPage) {
            console.log(newPage)
            this.queryInfo.pagenum = newPage
            this.getUserList()
        },
        //监听 switch 开关状态的改变
        async userStateChanged(userinfo) {
            const {data: res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
            if (res.meta.status !== 200) {
                userinfo.mg_state = !userinfo.mg_state
                return this.$message.error('更新用户状态失败！')
            }
            this.$message.success('更新用户状态成功！')    
        },
        //监听添加用户对话框的关闭事件
        addDialogClosed() {
            this.$refs.addFormRef.resetFields()
        },
        //点击按钮添加新用户
        addUser() {
            this.$refs.addFormRef.validate(async valid => {
                if (!valid) return
                //可以发起添加用户的网络请求
                const { data: res } = await this.$http.post('users',this.addForm)

                if(res.meta.status !== 201 ) {
                    this.$message.error('添加用戶失败!')
                }

                this.$message.success('添加用户成功!')
                //隐藏对话框
                this.addDialogVisible = false
                //重新获取用户列表数据
                this.getUserList()
            })
        },
        //展示编辑用户的对话框
        async showEditDialog(id) {

            const {data: res} = await this.$http.get('users/' + id)

            if(res.meta.status !== 200 ) {
                return this.$message.error('查询用户信息失败!')
            }

            this.editForm = res.data
            this.editDialogVisible = true
        },
        //监听修改用户对话框的关闭事件
        editDialogClosed() {
            this.$refs.editFormRef.resetFields()
        },
        //修改用户信息并提交
        editUserInfo() {
            this.$refs.editFormRef.validate(async valid => {
                if (!valid) return
                //发起修改用户信息的数据请求
                const {data: res} = await this.$http.put('users/' + this.editForm.id, {
                    email: this.editForm.email,
                    mobile: this.editForm.mobile
                })

                if(res.meta.status !== 200) {
                    return this.$message.error('更新用户信息失败!')
                }

                //关闭对话框
                this.editDialogVisible = false
                //刷新数据列表
                this.getUserList()
                //提示修改成功
                this.$message.success('更新用户信息成功!')
            })
        },
        //根据id删除对应的用户信息
        async removeUserById(id) {
            //弹框询问用户是否删除数据
            const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => {
                return err
            })

            //如果用户确认删除，则返回值为字符串 confirm
            //如果用户取消删除，则返回值为字符串 cancel
            if (confirmResult !== 'confirm' ) {
                return  this.$message.info('已取消删除')
            }

            const {data: res} = await this.$http.delete('users/' + id)

            if(res.meta.status  !== 200) {
                return this.$message.error('删除用户失败!')
            }

            this.$message.success('删除用户成功!')
            this.getUserList()
        }
    }
}
</script>

<style lang="less" scoped>

</style>